Improvement in cultivators



L. STEVENS.

GULTIVATOR.

Patented Nov. .27, 1860 i E.. .IL y ahw: o m f H l. *I I vI. I

v UNITED STATES PATENT OEEICE.

L. STEVENS, OF DOVER, KENTUCKY.

lMPR'OVEMENT IN CULTIVATORS.

3, a back sectional view of the same.

Similar letters of reference indicate corresponding parts in the severalligures.

AThis invention consists in the employment A or use ot' revolvingtoothed shafts and a share arranged in a novel way, so as to beadjustable, and applied to a frame provided with. a driving-wheel, fromwhich the toothedshafts are driven, all the parts being arrangedsubstantiallyv as hereinafter described, whereby all crops vgrown inhills or drills may be c ultvated-that is to say,have the ground betweenthem pulverized and weeds eradicatedin a thorough and eilicient manner.

To enable those skilled in the-art to tully understand and construct myinvention, I will proceed to describe it.

A represents a horizontal bar or beam, in the front part of which awheel, Bis placed, said wheel having a concentric gear, C, at each lsideot' it, intowhich pinions l) D at each side of the bar or benin A mesh.(See. Fig. 2,.) The periphery of the wheel B is provided with radialpins a to prevent its slipping.

`E E are oblique shafts, which are provided ...with radial teeth a andplaced below. the bar or beam A and one at each side ot' it. The frontends of the shaft E E areprovided with pinions lF. F, which gear intothe pinions l) D, andthe front ends of the shafts E have their bearingsin supports G G, attached to the front part ofthe bar or beam A. Theback parts of the shafts E E have their bearings b attached to the outerends of slides H H. These slides are of curved torni, and they areplaced on a curved or segment bar, I, which is attached to a lever, J.The front end of the lever J is secured bya fulcrnm-pin, c, to anupright, K, which is secured to and passes through the har or beam A.

L is a double mold-board plow, the back end of which is attached by apivot, d, to the lowerI end of the uprightK. To the front part of theplowvthe lower'end ot' a rod, M, is 'pivoted. This rod passes up'throughthe bar or beam A,

has a screw, c, cut on its upper end, and a nut, N, fitted on it.

Ois a lever, which is secured by afulcrumpin, f, to the back edge ot'the segment-bar I. The back ends ot' the shafts E E are connected byrods gg to the lever O, one rod g being attached to the lever O aboveits fulcrum fand the other attached below it. The upper part ot thelever O passes through the back part of an arm, P, the front end ofwhich is secured by a pivot, h, to the bar or beam A. On the back partof the arm P there is secured an eccentric, Q, which, by being turned,will press against the lever O and secure'it in either of a series ofnotches, t', in the edge ot' a plate,R, at the back end of the bar orbeam A. The plate R extends downward, and is narrow, forming a bar, j,which is notched at its right edge, as shown atj. The lever J may bef1tte'd in eitherofthe notches and secured theref in by a bar, S, theupper'end of which is pivoted to theback end of the bar or beam A, as

shown atl. The lower part of the bar S isv secured in proper place by acatch, mr The bar or beam A is provided-with handles T T, which may bethe same as those used on ordinary plows.v

The operation is as follows: As the implement is drawn along the shaftsE are rotated from wheel B through the medium of the gearing C D F, andthe teeth a pulverize the earthv and throw it toward the plant, whilethe plow L throws up the earth to the action ot' the teeth a". Theshafts E E may be adjusted nearer together or farther apart at theirback ends by actuating lever O, which is retained. in proper position byan eccentric, Q, and notched plate It, as previously described.

The shafts E may be raised or lowered by adjusting lever J in either ofthe notches j oti the barj..

The plow L may have its point elevated or depressed to plow at afgreateror less depth by adjustingrod M through the medium of the nut N. I

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

The adjustable revolving toothed shafts E E, in connection with theadjustable plow L, all being arrangedl essentially as and for4 thepurpose herein set forth. v

` L. STEVENS. Witnesses:

JOHNSON PEoK, J AMES MOMILLAN.

